对周期确定较难的设备，通过静力地震系数法，确定地震作用，以求设备与建(构)筑物处于同等安全度。
If the equipment vibration period is hard to get, we could use the static force seismic coefficient theory to define the seismic effect to ensure the equal safety of the equipment and building.
本文采用动力非线性有限元法研究了钢筋混凝土面板堆石坝的地震反应，并用滑移面上的静、动应力求得坝坡抗震稳定安全系数时程曲线。
A study on the dynamic response of a rockfill dam with reinforced concrete facing excited by earthquake by means of nonlinear finite element method was presented in this paper.
采用有限元法计算该滑坡在天然与地震两种条件下的稳定性系数分别为1 14和1 1，可以认为滑坡在两种条件下的稳定性较好。
The stability coefficients of landside were 1.14 and 1.10 in nature and earthquake conditions by finite-element method, and these results proved that the landside was stable in these two conditions.
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